Out-of-bounds read in QEMU - CVE-2020-13791

Vulnerability identifier: #VU31807

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-13791

CWE-ID: CWE-125

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in hw/pci/pci.c. A local user on the guest operating system can trigger out-of-bounds read error by providing an address near the end of the PCI configuration space and read contents of memory on the system.

QEMU
Gentoo Linux
openEuler
qemu-block-iscsi
qemu-debuginfo
qemu-block-rbd
qemu-debugsource
qemu-block-curl
qemu-guest-agent
qemu-img
qemu-block-ssh
qemu-help
qemu-seabios
qemu

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

qemu-block-iscsi - addressed in versions 4.1.0-76, 4.1.0-80
qemu-debuginfo - addressed in versions 4.1.0-76, 4.1.0-80
qemu-block-rbd - addressed in versions 4.1.0-76, 4.1.0-80
qemu-debugsource - addressed in versions 4.1.0-76, 4.1.0-80
qemu-block-curl - addressed in versions 4.1.0-76, 4.1.0-80
qemu-guest-agent - addressed in versions 4.1.0-76, 4.1.0-80
qemu-img - addressed in versions 4.1.0-76, 4.1.0-80
qemu-block-ssh - addressed in versions 4.1.0-76, 4.1.0-80
qemu-help - addressed in versions 4.1.0-76, 4.1.0-80
qemu-seabios - addressed in versions 4.1.0-76, 4.1.0-80
qemu - addressed in versions 4.1.0-76, 4.1.0-80

• https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg00706.html
• https://security.netapp.com/advisory/ntap-20200717-0001/
• https://www.openwall.com/lists/oss-security/2020/06/04/1

• Multiple vulnerabilities in QEMU
• Gentoo update for QEMU
• openEuler 20.03 LTS SP1 update for qemu
• openEuler 20.03 LTS SP3 update for qemu